利用opencv拍照并且保存图片，短短二三十行代码，就可以实现这个功能，方便快捷，是嵌入式中实现拍照的一个很好的方法，亲测可用，但前提是你得把opencv的环境配好。(Using OpenCV to take pictures and save the picture, just twenty or thirty lines of code, you can achieve this function, convenient and quick, it is a good way to take photos in embedded system, but the premise is that you have to match the environment of OpenCV.)